Echo an $_POST in PHP

How can I print a $_P开发者_如何转开发OST?

Example:

echo $_POST['data'];

This returns nothing...

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You can also wrap your code with <pre> tags to make your array prints out nicer instead of just 1 continuous line. A trick that was shown by a member on this site.

<pre>
<?php var_dump($_POST); ?>
</pre>

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Your code is correct.

You can use either:

var_dump($_POST);

or

print_r($_POST);

to print out the entire POST array for debugging.

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You can only show the values of keys that exist. array_keys() returns an array containing the keys that exist in the array. If there is no output for a key despite the fact that the key exists then the array may contain an empty value for that key.